Cryptostegia grandiflora
Cryptostegia grandiflora · Apocynaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around cryptostegia grandiflora and prepare for winter.
ID card
- Family
- Apocynaceae
- Type
- Woody climbing plant
- Foliage
- Evergreen
- Flowering
- Spring to summer
- Flowers
- Large, rose-purple to violet
- Growth
- Fast
- Hardiness
- Tropical and subtropical climate (min. 10°C)
- Origin
- Madagascar and East Africa
Care
Light exposure
Place Cryptostegia grandiflora in full sun or partial shade for optimal flowering. It tolerates bright areas and appreciates direct rays that stimulate flower formation. Avoid overly shaded spots that reduce blooming.
Watering
Water regularly during the growing season, keeping the soil moist but well-drained. Reduce watering in winter. Allow slight drying between waterings, but don't let the plant suffer from prolonged drought.
Soil and support
Use rich, well-draining soil enriched with organic matter. Provide a sturdy support (trellis, mesh, or frame) as the plant becomes vigorous. Fertile substrate promotes growth and abundant flowering.
Pruning and training
Prune after flowering to control expansion and encourage branching. Guide the stems toward your support regularly. Light pruning helps maintain a dense shape and encourages generous flowering the following year.
Fertilizing
Apply balanced fertilizer or one rich in phosphorus and potassium every 2 to 3 weeks during the growth and flowering phase. Reduce or stop feeding in winter depending on your climate. Apply fertilizer in spring to boost vegetation.
Pests and diseases
Watch for mealybugs and whiteflies, especially in warm climates. Excess moisture can promote fungal issues. Check foliage regularly and treat promptly at the first signs using methods suited to your conditions.
Did you know?
Cryptostegia grandiflora originates from Madagascar, a continent-island renowned for its exceptional biodiversity. This spectacular climber has been introduced to other tropical and subtropical regions where it has sometimes naturalized, fascinating botanists with its adaptation capacity. Its large pink to mauve flowers resemble oleanders and attract pollinators while producing a white, sticky sap when stems are broken.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- Lesser periwinkleVinca minor
- Greater periwinkleVinca major
- OleanderNerium oleander
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- Star jasmineTrachelospermum jasminoides
- AmatunguluCarissa macrocarpa
Tips generated and checked by Viridia — adapt them to your local climate.